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Building a High-Performance Cluster with Gentoo

Building a High-Performance Cluster with Gentoo

Posted Apr 11, 2007 16:21 UTC (Wed) by dlang (subscriber, #313)
In reply to: Building a High-Performance Cluster with Gentoo by njs
Parent article: Building a High-Performance Cluster with Gentoo

useing the approach described above you don't have different systems running different versions of things (unless you want them to). with the binary package server you have one box compile the code with the optimizations that you want, and then it makes the results available to all the other systems (assuming that they are identical)

I haven't done head-to-head performance comparisons with gentoo, but I have seen cases where optimizing the kernel could result in 20-30% performance improvements in the past (back in the 1GHz athlon days). on modern 64 bit hardware it's less of an issue becouse there's less variability between hardware, and therefor less difference betwen optimized versions and the generic versions.

where I actually see the benifit of gentoo where I use it (my home server) is in the ability to configure the packages with the options and dependancies that I want them to have (this means turning on some that other distros would leave off, but mostly turning off options that other distros turn on, but I don't care about)


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Building a High-Performance Cluster with Gentoo

Posted Apr 12, 2007 6:29 UTC (Thu) by njs (guest, #40338) [Link]

>using the approach described above you don't have different systems running different versions of things (unless you want them to).

You misunderstand -- the point is that all your systems might be the same, but they'll be different from everyone else's systems. For instance, they will be different from the people who you let upgrade to cool new version of Foobar2000 first, so that they could trip over the nasty bugs and get them fixed before you hit them. (Plus the maintainers tasked with fixing those bugs have a huge combinatorial space of configurations they are trying to support.)

Building a High-Performance Cluster with Gentoo

Posted Apr 12, 2007 13:06 UTC (Thu) by nix (subscriber, #2304) [Link]

Indeed. This is one of the reasons *why* I run bleeding-edge systems on all my systems for which stability is relatively unimportant: specifically so that I can find niggling portability bugs before other people. I find a few a month, typically (sometimes a few a week, sometimes none for a month or two, but the trickle never stops completely).


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